JP2010011626A5

JP2010011626A5 -

Info

Publication number: JP2010011626A5
Application number: JP2008167691A
Authority: JP
Filing date: 2008-06-26
Publication date: 2012-01-05

Description

第１の手段は、回転軸と、前記回転軸の外周面を取り巻く磁石と、前記回転軸と前記磁石とを互いに接着する接着剤とを有する電気モータ用回転子において、前記回転軸の外周面および前記磁石の内周面は、前記回転軸および前記磁石が係合するとともに前記回転軸および前記磁石が連動して回転する形状を有し、前記回転軸の外周面は、平面部を有し、前記磁石の内周面は、前記回転軸の平面部に対応する平面部を有する。The first means is a rotor for an electric motor having a rotating shaft, a magnet surrounding the outer peripheral surface of the rotating shaft, and an adhesive that bonds the rotating shaft and the magnet to each other. And the inner peripheral surface of the magnet has a shape in which the rotary shaft and the magnet engage with each other and the rotary shaft and the magnet rotate in conjunction with each other, and the outer peripheral surface of the rotary shaft has a flat portion. The inner peripheral surface of the magnet has a flat portion corresponding to the flat portion of the rotating shaft.

また上記構成によると、回転軸は外周面に平面部を有し、磁石は、この平面部に対応する磁石の内周面に平面部を有する。従って、回転軸の外周面の形状および磁石の内周面の形状が、磁石が回転軸に係合するとともに、磁石と回転軸とが連動して回転する形状である。また、回転軸の外周面と、磁石の内周面とに平面部を設けるのみで、磁石が回転軸に係合するとともに、磁石と回転軸とが連動して回転する形状を容易に形成することができる。 Further, according to the above Symbol configuration, the rotary shaft has a flat portion on an outer peripheral surface, the magnet has a flat surface portion on the inner peripheral surface of the magnet corresponding to the flat portion. Therefore, the shape of the outer peripheral surface of the rotating shaft and the shape of the inner peripheral surface of the magnet are shapes in which the magnet engages with the rotating shaft and the magnet and the rotating shaft rotate in conjunction with each other. Further, only by providing flat portions on the outer peripheral surface of the rotating shaft and the inner peripheral surface of the magnet, the magnet can be easily engaged with the rotating shaft, and a shape in which the magnet and the rotating shaft rotate in conjunction with each other can be easily formed. be able to.

第２の手段は、請求項１において、前記回転軸の外周面は、前記回転軸の長手方向に垂直な断面において多角形を形成し、前記磁石の内周面は、前記磁石の長手方向に垂直な断面において、前記回転軸の多角形と相似する多角形を形成する。According to a second aspect of the present invention, in the first aspect, the outer peripheral surface of the rotating shaft forms a polygon in a cross section perpendicular to the longitudinal direction of the rotating shaft, and the inner peripheral surface of the magnet extends in the longitudinal direction of the magnet. In a vertical section, a polygon similar to the polygon of the rotation axis is formed.

Claims

  In a rotor for an electric motor having a rotating shaft, a magnet surrounding an outer peripheral surface of the rotating shaft, and an adhesive that bonds the rotating shaft and the magnet to each other,
  The outer peripheral surface of the rotating shaft and the inner peripheral surface of the magnet have a shape in which the rotating shaft and the magnet rotate in conjunction with the rotating shaft and the magnet,
  The outer peripheral surface of the rotating shaft has a flat portion,
  The inner peripheral surface of the magnet has a flat portion corresponding to the flat portion of the rotating shaft.

  In claim 1,
  The outer peripheral surface of the rotating shaft forms a polygon in a cross section perpendicular to the longitudinal direction of the rotating shaft,
  The inner peripheral surface of the magnet forms a polygon similar to the polygon of the rotating shaft in a cross section perpendicular to the longitudinal direction of the magnet.